Félix takes photographs beside a fossil reef.

A fossilized star coral in Owl Canyon.

Mauro puts fine samples into a small bags for ear bones, sponge spicules or other microfossils.

Erin and Félix carry off heavy bags of samples for analysis.

It took a few wrong turns but we made the trip to the Cañon del Buho (Owl Canyon), on the shores of the Dominican Republic’s Lake Enriquillo.

Stay tuned for more updates and videos. Here are some photos from the field trip.